High pressure PD pump low emission seal?
High pressure PD pump low emission seal?
(OP)
Hi all,
We currently have a PD pump on our Hydrotreater pumping high concentration H2S (above 2000 ppm)water at 6 m3/h. It pumps from a suction of 3.7 kg/cm2 to 70 kg/cm2. Unfortunately we are only using single packing on this service, which I believe is specified wrongly during design. Any recommendation/experiences in similar situation on seals to use?
Pump is not reliable at all because of its service, valves keep damaging causing severe water hammering (believe a pipe elbow failed once due to fatigue), but thats another matter.
We currently have a PD pump on our Hydrotreater pumping high concentration H2S (above 2000 ppm)water at 6 m3/h. It pumps from a suction of 3.7 kg/cm2 to 70 kg/cm2. Unfortunately we are only using single packing on this service, which I believe is specified wrongly during design. Any recommendation/experiences in similar situation on seals to use?
Pump is not reliable at all because of its service, valves keep damaging causing severe water hammering (believe a pipe elbow failed once due to fatigue), but thats another matter.





RE: High pressure PD pump low emission seal?
trust this helps.
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
cheers.
RE: High pressure PD pump low emission seal?
The pump should work well in clean water service, but our process design information given to the manufacturer was wrong, it was listed as clean water.
Current fluid is H2S concentrated water, usually below 30 C, sulphide 500 - 2000 ppm, there are some abrasives in the water, havent measured quantity and size yet. Sometimes we find crystalised fine abrasives on the packing and valves. Apparently its sulphur from the H2S when mixed with air. Im guessing because packing are not meant to be sealed tight it could possible go in through there. Let me know if you need more info.
Thanks a lot flexibox
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
I could not find any information on these pumps and doubt whether you can fit dual mechanical seals. Sorry canot help. Yes you can fit seals in pilot tube pumps just trying to remember the brand name of such pumps to send you something. I will check this too.
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?
RE: High pressure PD pump low emission seal?